Pump



INVENTORS,

C. ROOSE ET AL.

. PUMP Jan. 25, 1944.

Filed May 15. 1942 Patented Jan. 25, 1944 PUMP Cyriel Roose and ThomasE. Jackson, Detroit, Mich., assignors to Sherman, Jackson & RooseCompany, Detroit, Mich., a corporation oi" Michigan Application May 15,1942, Serial No. 443,038

(Cl. S-178) 2k Claims.

This invention relates to pumps and has particular reference to aninexpensive and simple type of hand operated pump which is particularlyadapted for pumping water or other liquids.

A principal object of the invention is to pro-v vide a hand operatedpump in which many of the parts thereof are made of a non-metallicmaterial such, for example, as wood.

Another object of the invention is Vto provide an inexpensive type cfhand operated pump which is particularly adapted for use in connectionwith abucket or pail of water forpumping such water through a nozzleunder suihcient pressure to throw a fairly continuous stream of water inthe neighborhood of at least twenty feet to twentyiive feet.

Another object of the invention is to provide aninexpensi-ve and simpletype of pump Which is adapted for use as home refighting equipment orfor use in pumping or spraying liquids such as insecticides and whichpump is constructed and arranged,A during operation thereof, todischarge a continuous stream of liquid. x

Another object of the invention is to provide a pump in which thecylinder thereof is formed by a block ofrnon-metallic material, such. aswood, which is impregnated with oil or other suitable material so as toresist deterioration by the liquids handled ,by the pump.

Other objects and advantages of the invention will. be apparent from theconsideration of the Y following specicationy taken in conjunction withthe accompanying drawing of which there is one sheet and` wherein:

VFig. 1 is a sectional view of a bucket having a pump employing theinvention arranged thereinl and adapted for pumping liquid from thebucket through a conduit or pipe which is connected to the discharge ofthe pump;`

Iig. 2. is an enlarged elevational View of the. pump embodying theinvention, parts, thereof being; broken away and others shownin sectionfor illustrating details of the construction of the Pump? and.

, Fig. 3 is,` a horizontal sectional view taken in. ai plane along theline 3 3 ofv Eig'. 2. looking in thev direction. of. the arrows.

' pump embodying the inventionY is particularV comprises a bucket Hlhaving a handle E2 and a pump indicated generally at id secured withinthe bucket Eil Kby means such as a pair of strapsv I6 encircling thebody oi the pump and suitably f fastened te the side of the bucket to.The

bucket lil may be provided with foot rests I8 for holding the bucket inposition during such time as the pump is operated. The pump lli isadapted to pump liquids from the interior of the bucket l0 and todischarge such liquid through a pipe indicated generally at 2li which isconnected to the discharge outlet 22 of the pump.

As illustrated more particulariy in Fig'. 2, the' pump comprises a bodymember 2t, a handle 26, a piston 28, an inlet 30 and the discharge oroutlet 22. The body member 24 as' illustrated comprises a block ofnon-metallic material, such as' wood, which is formed internally thereinto p'ro- Vide a cylinder bore E2. The .bore 3,2 'may be" formed bydrilling a cylindrical hole through the body member 2t. Cypress woodimpregnatedV with oil may be employed for making the Ibody member 2li.The cylinder bore 32 is closed at its' lower end by a disc-like body 31Ewhich is formed with an opening therein, such opening providing* theinlet Si! to the pump cylinder. The body 34. may be formed to include aprojection' 35 which, seats within the end of the cylinder 32 forlocating the member 34 with respect to the body mem'-y ber 24 and suchprojection 3S is formed to provide a seat 33 for a valve member dil',the seat 38': and valve `men-ibex fle comprising an inlet 'valveI forthe pump. The valve member it may com-4 prise a spherical ball of anysuitable material and? is adapted to rest upon the seat 38 for thepurpose, of closing the inlet 36 to the pump cylinder or Ibore 32.Means, such as a pair of nails Il? carried by the body member 2d a shortdistance above the valve seat 38, are provided to form a stop forlimiting the upward travel of the valve member 40', the upper positionof which is indicated in.'A dotted lines.

The piston-28 of the pump', as illustrated, coniprises a hollow tubularmember @il having an' out-:f side diameter materially less than that ofthe inside diameter of the cylinder bore' ,32. The p'ston includes ahead comprising a member @it pros vided with an annular flange t8 whichis threadiedly or otherwise suitably secured to one end of the tubularmember fill and clamps an annular' gasket 5! against a washer 52 whichis held'` against the end oi the tubular member lid. A- (ValVe membercomprising a spherical ball i's g arranged within the tubular member Mand is adapted to cooperate with spaced valve seats and 60. The valveseat 58 may be provided by the upper circular inside edge of the member46 while the other valve seat may be provided by an annular ridge formedin the wall of the tubular member 44. The tubular member at its upperend is suitably connected to the handle 26 in order that the piston maybe manually or otherwise reciprocated in the cylinder bore 32. The upperend of the cylinder bore is closed by a disc member 62 which is providedwith an opening for the tubular member 44. A washer 66 may be arrangedon a seat at the upper end of the cylinder bore and provide an upperbearing or guide for the tubular member 44 and suitable packing may beprovided between the washer 66 and the disc member 62. The disc member62 may be secured to the body member 24 by means of one or more screws68. A sleeve-like member 'l0 disposed around the tubular member 44 atthe upper end thereof and adjacent to the handle 26 is adapted tocontact the outside surface of the disc member 62 for limiting thedownward movement of the piston. The discharge from the pump comprises anipple secured in a laterally extending opening formed in the side wallof the body member,the inner end of the nipple communicating with theupper end of the cylinder bore 32. Between the upper and lower positionsof the valve member 56 the tubular member is provided with a pluralityof openings 12, which together with the valve member 56 and valve seat58 forms a by-pass for transferring liquid in the cylinder from theinlet side of the cylinder to the discharge side thereof.

The pump may be supported by a plurality of legs 16 which together withthe disc 34 are secured to the body member 24 by means of one or morescrews such as 8U, and a screen 18 may b e wrapped around the legs 16 soas to provide a lter for screening the liquid drawn into the pump fromthe bucket I0.

Upon upward movement of the piston 28 the valve 56 will seat and thevalve 40 will unseat thereby drawing fluid into the pump cylinder belowthe piston head and 'through the inlet opening 35. When the head reachesthe upward limit of its travel in the cylinder 32 just below thedischarge 22, a stop carried by the rod 44 will engage the washer 65 atthe upper end` of the cylinder and as the iniiow of liquid to the pumpcylinder ceases the valve 40 will seat on its seat `38 and close theinlet opening, thereby preventing the escape of fluid from the cylinder32 therethrough. When the piston is at the'upper limit of its travel, aspreviously indicated, the cylinder 32 will be full of liquid assumingthat there was a sufficient supply in the bucket l5. Downward movementof the piston will open the by-pass therethrough by unseating the valve56 from its seat 58 and under the influence of the liquid passingthrough the member 46, the valve member 56 will seat on its upper seat66 while liquid in the cylinder bore 32 Will ow through the by-pass inthe piston including the openings 12 and be transferred tc the dischargeside of the piston,

The mass of the piston head and the rod 44 is such that upon movement ofthe piston from its upper limit of travel to its lower limit of travel,approximately half of the iluid in the cylinder will be forced outthrough the outlet 22 and hose 20. When the piston reaches the lowerlimit of its travel, the space in the cylinder 32 on the discharge sideof the piston will be occupied by liquid which will be dischargedthrough the outlet 22 on the next upward stroke of the piston.

the valve 56 during such upward stroke seat on its seat 58 as previouslyindicated.

The interior of the tube 44 during the upward stroke of the piston isopen through the opening 12 to the cylinder, and while the interior ofthis tube might be permanently closed at 60 if desired, it is here shownas being open except at the top thereof where it is closed by a plug towhich the handle 26 is secured. The space in the tube 44 above the valveseat 60 will function as an air bell or expansion chamber if it isfilled with air. It might, of course, have the air removed therefrom ifthe pump is filled with a liquid in an inverted position.

From the foregoing it will be evident that the pump is constructed andarranged to discharge liquid on both the up and down strokes of thepiston. The provision of a suitable nozzle on the end of the hose 20will enable the liquid discharged from the pump to be forced in a streamor sprayed, and the continuous operation of the piston will discharge acontinuous stream of;Y liquid through the hose 20. A pump of this typein view of its simplicity and economy in manu- .V facture isparticularly adapted for use as a piece of home re ghting equipment foruse in dealing with incendiary bombs, etc., and in addition may be usedas a garden spray for dispersing water,= insecticides, etc. When thebucket is full of water the pump is ready for instant use, and as the;bucket may be refilled during operation of the pump, no interruption inthe discharge of water through the hose 20 is necessary during suchtime: as the pump and its assembly with the bucket might be used infighting fires. 'I

While the invention has been described Withsome detail, it is to beunderstood thatl the description is for the purpose Vof illustrationonly and is not definitive of the limits of the inventive; idea. Theright is reserved to make such changes' in the details of constructionand arrangement; of parts as will fall within the purview of the attached claims. l

We claim:

1. A portable liquid pump comprising a cylinderI having a valvecontrolled inlet at one end thereof; and a discharge outlet at the otherend thereof,' a piston reciprocable in said cylinder and com-f prising ahead, a rod connected to said head for reciprocating the same in saidcylinder and projecting from the discharge end of said cylinderj'" saidhead upon movement thereof away from said" valve controlled inletoperating to draw liquid' into said cylinder on the intake side thereofand to discharge liquid from said cylinder on the discharge sidethereof, said rod comprising a hollow? tubular member and said headcomprising anV annular member secured to the end of said tubu-l larmember and projecting therein so as to define a valve seat therein, saidtubular member having an opening in the Wall thereof spaced from saidvalve seat and a ball valve member in said' tubular member andcooperable with said valve seat, said valve seat and member comprisingai valve controlled opening in said head which opens upon-movement ofsaid head toward said cylinder i inlet so as to permit liquid in saidcylinder to bypass said piston head, said tubular member being formed toprovide a valve seat above said open` ing, said ball valve member beingadapted to seat. on said last-mentioned valve seat during down-- wardmovement of said piston head so as to.pre vent the entrance of liquidinto said hollow mem-f ber above said last-mentioned valve seat, said,rod and head having such mass that during mover-Q ment thereof in thecylinder toward the inlet thereof liquid Will be displaced from thecylinder through the outlet thereof.

2. A liquid pump comprising a cylinder having a valve controlled inletat one end thereof and a discharge outlet at the other end thereof, apiston reciprocable in said cylinder and comprising a head, a rodconnected to said head for reciprocating the same in said cylinder andprojecting lfrom the discharge end of said cylinder, said head uponmovement thereof away from said valve controlled inlet operating to drawliquid into said cylinder on the intake side thereof and to dischargeliquid from said cylinder on the discharge lar member having an openingin the wall thereof spaced from said valve seat and a valve member insaid tubular member and cooperable with said valve seat, said valve seatand member comprising a valve controlled'opening in said head whichopens upon movement of said head toward said cylinder inlet so as topermit liquid in said cylinder to by-pass said piston head, said tubularmember being provided with a second valve seat upon which said valvemember seats upon movement of said head towardsfthe inlet of saidcylinder, said rod and head having such mass that Iduring movementthereof in the cylinder toward the inlet thereof liquid will be forcedfrom the side thereof, said rod comprising a hollow tubular 15 cylinderthrough the outlet thereof.

member and said head comprising an annular member secured to the end ofsaid tubular member and defining a valve seat therein, said tubu- CYRIELROOSE. THOMAS E. JACKSON.

